CN102933309B - The method for controlling the line distortion of the electric power supply system of electrostatic precipitator - Google Patents
The method for controlling the line distortion of the electric power supply system of electrostatic precipitator Download PDFInfo
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- CN102933309B CN102933309B CN201180030195.9A CN201180030195A CN102933309B CN 102933309 B CN102933309 B CN 102933309B CN 201180030195 A CN201180030195 A CN 201180030195A CN 102933309 B CN102933309 B CN 102933309B
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- electric power
- supply
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- electrostatic precipitator
- power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/025—Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
Abstract
This disclosure relates to electrostatic precipitator unit, it has pulse operation of at least two single supplies of electric power (11) for electrostatic precipitator, wherein supply of electric power (11) is powered by public feed (1), wherein each supply of electric power (11) includes control unit (23), and wherein control unit is indirectly connected with least through communication line (32), to allow the pulse manipulated controlled relative scheduling of single supply of electric power (11).
Description
Technical field
The present invention relates to electrostatic precipitator unit, it has independent for pulse manipulated at least two of electrostatic precipitator
Supply of electric power, wherein the supply of electric power is powered by public feed.The invention further relates to the behaviour of this electrostatic precipitator unit
Make method.
Background technology
With the growing interest for environmental pollution, particulate emission is reduced for combustion by using electrostatic precipitator (ESP)
The problem of coal-fired plant is extremely important.ESP is very suitable dust-collector.Their design is healthy and strong, and they
It is very reliable.Moreover, they are maximally effective.More than 99.9% separating degree is not rare.Because working as and fiber filter
When device compares, their running cost is low, and the risk damaged and stopped as caused by functional disturbance is fairly small, because
This they be all natural selection in many cases.In ESP, contaminated gas is being connected to the electricity of ESP supplies of electric power
Conducted between pole.Generally, this is the high voltage variable for having IGCT control on the primary side as well and having rectifier bridge on the secondary side
Depressor.This arrangement is connected to common AC power supplies, and is thus powered with 50 or 60Hz frequency.By changing touching for IGCT
Hair postpones to realize Electric control.Trigger Angle is smaller, i.e., turn-on cycle is longer there is provided the electric current to ESP is more, and ESP
Voltage between electrode is higher.Modern ESP is divided into some bus section, busbar sections to increase collection efficiency.It is each in these bus section, busbar sections
Supply of electric power with its own（PS）, it is independently controlled and has 10-200kW typical output power scope and 30-
150kVDC output voltage range.
Modern ESP supply of electric power be often based on resonance converter so as to using transformer imperfection and with pair
In the Sofe Switch of wide opereating specification.ESP exemplary power supply is known from US 2009/0129124.
The content of the invention
Modern ESP is often operated in pulse mode.The pulse operation of electrostatic precipitator significantly affects on electric power matter
Amount, because it can cause elevated track current distortion (total harmonic distortion) and unbalance power phase loading.Thus, can cause by
Heating, audible noise, power supply in the interruption for the equipment that public feed is fed and failure, transformer, generator and power circuit
In electric resonance, generator, mechanical oscillation in engine etc..If for example with pulse manipulated one group of supply of electric power by public
Feed to feed, then these problems may worsen, because the pulse in different supplies of electric power is likely to occur in synchronization.
On the other hand, if dispatching the pulse in each supply of electric power in an optimal manner, it should be possible to reduce this type operations
In undesirable effect so that power consumption becomes more continuous in time.At the moment, the supply of electric power system applied for ESP
System does not allow even to do so without using any strategy for dispatching pulse；Therefore there is any current wave in input
Shape.
This is the starting point of the present invention, to propose that a kind of new and improved electrostatic precipitator is set, for being connected to public affairs
The operation of at least two supplies of electric power fed altogether, the supply of electric power is predetermined provide pulse power output for the electricity
The pulse operation for the one or several ESP that power supply is operated together.
Therefore, the energy quality optimization of present invention processing power supply, for one group of supply of electric power with pulse operation to electrostatic
Deduster (ESP) is fed.
The electrostatic precipitator device and corresponding optimisation strategy of the modification provided be can be applied into operation in pulse mode herein
Any group of supply of electric power of formula.Thus, just it is considerably improved between at the beginning of can be achieved simply by the different pulses of control
Line current, without any additional means.
All supplies of electric power that " optimal cases " of ESP system occur to operate with full load are fed with continuous power to ESP
When, the phase current of wherein power supply is balanced, and the relation between the average value and harmonic component of power consumption is in minimum.Examine
Consider the situation, the essential idea of this optimization is allowed pulse arrangement in optimal sequence so that the group pulse electric power is supplied
Should have with operate continuous mode equivalent single supply of electric power by with similar circuit behavior.
Therefore, one of core of the invention can be summarized as follows：
The electrostatic precipitator unit of the modification proposed allows at the beginning of each supply of electric power by relative to one reference
Initial pulse is shifted by time delay so that by the pulse arrangement of single supply of electric power in optimal sequence.The purpose is substantially
It is to provide for that the structure in the gap between the pulse stuff reference pulse by other supplies of electric power can be realized.
When pulse be substantially uniformly distributed in the reference pulse cycle and by relative to other sections by an area
All pulses of section by same delay to shift when, it was observed that optimal behavior.
It is more particularly related to a kind of electrostatic precipitator unit, it has at least two single supplies of electric power
For the pulse operation of electrostatic precipitator, wherein the supply of electric power is powered by public feed (power supply).
According to the present invention, each individually supply of electric power includes control unit, and these single control units are at least
It is indirectly connected among each other by communication line, to allow the pulse manipulated controlled relative scheduling of single supply of electric power.
The supply of electric power for the unit powered by public feed can power at least two single electrostatic precipitator, for example often
Individual is a part for different exhaust ducts.These exhaust ducts it is each in, may again exist also by public feed power it is independent
Some bus section, busbar sections that independent supply of electric power is powered.
According to another embodiment, supply of electric power is a part for an electrostatic precipitator, is generally supplied to its different bus section, busbar section
Electricity, or powered to the disparate modules in a bus section, busbar section.
Control can be achieved in the cells, and mode is so that has communication line, and one between single control unit
Individual control unit is leading and controls relative scheduling, or this control is in the control list for the part for forming single supply of electric power
Shared between member.On the other hand, it is also possible to, and according to another preferred embodiment of the invention, the unit also includes being connected to
Communication line and control supply of electric power dispatch control computer (it can be special-purpose computer, or it can also be handled
The computer of other tasks in deduster or in power plant).
The pulse manipulated relative scheduling of single supply of electric power can be achieved, because a supply of electric power is defined as reference
Supply of electric power, and the inceptive impulse of each other supply of electric power presses controlled delay relative to the pulse with reference to supply of electric power
Displacement, to fill the gap between reference pulse by the pulse of other supply of electric power.In the case, controlled delay energy
In being determined to be so that the pulse of other supply of electric power to be substantially uniformly distributed over to the pulse period for referring to supply of electric power,
Wherein preferably, if the pile-up pulse width of all supplies of electric power is less than the maximum impulse cycle, controlled delay is determined to be
So that the gap between all pulses is substantially the same, if the pile-up pulse width of all supplies of electric power is equal to maximum impulse week
Phase, then controlled delay is determined to be so that very close to each other between all pulses, and if the accumulation arteries and veins of all supplies of electric power
Width is rushed more than the maximum impulse cycle, then the overlapping length of all pulses is equal.
Generally, the supply of electric power used in the present context is, based on high-tension transformer, to be preferably based on IGBT (integrated grid
Bipolar transistor) converter, preferably allow for the loaded in series resonance converter with high power and high pressure, preferably described Gao Gong
Rate is in 10--200kW scopes and/or the high pressure in 50-150kV DC scopes.
According to another preferred embodiment, the system is suitable for using the pulse width that has for being supplied to electrostatic precipitator to exist
0.1-20ms scopes and/or operated with the pulse period in the DC pulses of 0.5ms-2s scopes, wherein being preferably defined as pulse
Scope of the pulse ratio of width divided by pulse period in 1-1/2000.Electrostatic precipitator may include to be used for pulse manipulated at least one
Individual bus section, busbar section and at least one other bus section, busbar section for continuous operation.
Moreover, according to another preferred embodiment, the unit may include at least three supplies of electric power, preferably at least four electricity
Power is supplied, and most preferably at least six supplies of electric power, preferably all of which are electrically connected and powered by common feed, and at least through
Communication line is indirectly connected with.In the case of big deduster unit, it is understood that there may be up to 24 or even 36 supplies of electric power or
More, they are independently controlled and dispatched, and are all powered by public feed.
Moreover, the present invention relates to a kind of commercial Application, it includes electrostatic precipitator unit as described above, such as power plant,
It is preferred that the power plant of fossil fuel operation, the power plant of optimal coal separation operation, their waste gas passes through electrostatic precipitator purification unit.It is quiet
Electric cleaner unit can be additionally used in another dust and produce process, such as slag band screen system, cement manufacturing process etc..
Except above, the present invention relates to a kind of method of the operation for unit outlined above, wherein an it is preferred that electricity
Power supply is defined as referring to supply of electric power, and wherein each other supply of electric power inceptive impulse relative to referring to electric power
The pulse of supply is shifted by controlled delay, so as to by the pulse stuff of other supply of electric power with reference to supply of electric power pulse it
Between gap, and wherein preferentially with reference to supply of electric power be the system with the maximum impulse cycle supply of electric power.
According to the preferred embodiment of the method, controlled delay is determined to be so that the pulse of other supply of electric power is basic
On be evenly distributed in the pulse period with reference to supply of electric power, wherein preferably, if the pile-up pulse of all supplies of electric power
Width is less than the maximum impulse cycle, then controlled delay, which is determined to be, make it that the gap between all pulses is substantially the same, if
The pile-up pulse width of all supplies of electric power be equal to the maximum impulse cycle, then controlled delay be determined to be so that all pulses it
Between it is very close to each other, and if all supplies of electric power pile-up pulse width be more than maximum impulse cycle, then all pulses friendship
Folded length（overlap length）It is equal.
Further embodiment of the present invention is defined in the dependent claims.
Brief description of the drawings
The preferred embodiments of the present invention are described below with reference to accompanying drawing, and the accompanying drawing is to illustrate that the present invention's is current
The purpose of preferred embodiment, rather than in order to limit their purpose.In the accompanying drawings：
Fig. 1 shows typical ESP assembling schemes, particularly with some continuous buses by 24 supply of electric power drivings
The system of section；
Fig. 2 shows the schematic diagram of a) single high frequency E SP supplies of electric power, b) typical single phase poaer supply frequency ESP supplies of electric power
Schematic diagram, c) high frequency power handle ESP supplies of electric power schematic diagram；
Fig. 3 diagrammatically illustrates pulse and trickle charge method；
Fig. 4 shows one group of 3 ESP supply of electric power；
Fig. 5 shows train of pulse in supply of electric power 1 (a), supply of electric power 2 (b) and supply of electric power 3 (c) and from electricity
Net is drawn（drain）General power (d)；
Fig. 6 shows in the ESP supplies of electric power 1 that (a) has pulse ratio 1/3, has the ESP of pulse ratio 1/5 electric at (b)
From the in the general power that power network is drawn in power supply 2, in ESP supplies of electric power 3 that (c) has pulse ratio 1/7 and at (d)
Two examples；
Fig. 7 shows the setting with the direct communication between the independent ESP powered by public feed；
Fig. 8 shows the setting with the communication between the independent ESP powered by public feed via master computer；With
And
Fig. 9 shows the example 3 of optimization and in supply of electric power 1 (a), supply of electric power 2 (b) and supply of electric power 3 (c)
Corresponding train of pulse and the general power (d) drawn from power network.
Embodiment
Generally, ESP system is divided into some bus section, busbar sections to improve particle collection efficiency.In mini system, only 2 or 3
Bus section, busbar section is connected in series, and in big system, some bus section, busbar sections are connected in parallel and serial.With different rated power not
Bus section, busbar section is often set to be powered with supply of electric power（energize）To optimize the collection efficiency of single bus section, busbar section.
Fig. 1 shows that the typical ESP with some continuous bus section, busbar sections by 24 supply of electric power drivings is assembled.Electrostatic precipitation
Device 5 includes entrance side, and the air-flow 4 for being loaded with particle such as coal dust enters ESP by the entrance side.ESP has entrance zone, threshold zone 6,
Followed by centre portion 7, and terminated by exit zone 8, its outlet is connected to chimney 9, and the waste gas 10 of purification is exited by chimney
To environment.Therefore, ESP is mechanically segmented into the section being connected in series and the unit being connected in parallel to utilize collection efficiency.
Each section/cell position is referred to as bus section, busbar section.One ESP supply of electric power is fed with high pressure to single bus section, busbar section.
Each in section 6-8 has the duster system (4 units and 6 sections) that two rows are individually powered, and obtains
24 bus section, busbar sections, and 24 supplies of electric power (PS) are provided for the energization of deduster for this.It is discussed further below
The general topology of this supply of electric power.Supply of electric power is powered via public feed 1, and the public feed 1 is via low pressure or middle pressure
Circuit 2 and distribution transformer 3 are connected to single supply of electric power.In other words, whole supplies of electric power is connected to common feed
Electric system 1, and if these supplies of electric power or the operation of its at least a portion are in pulse mode, then the load on power supply can be serious
It is unbalance.
High frequency three phase mains electric power for being powered to one of independent deduster in the setting according to Fig. 1 is shown in Fig. 2 a
Supply 11.On the input side, supply of electric power 11 is connected to power supply 1, and includes input rectifier 12 first.In input rectifier
DC link. capacitors 18 are located between these level there is provided DC current (DC) in 12 outlet side.This direct current
Then electric current passes through the transistors with multiple correspondence triggerings（fired transistor）Full electric bridge inverter 13 feed.
The operation of full electric bridge inverter 13 is controlled by driver 22, and driver 22 is controlled by control unit 23 again.Full electric bridge inverter 13
Alternating current on outlet side enters resonant tank and transformer unit 14, is given by the arranged in series of capacitor 19 and inductor 20
Go out resonance circuit, be followed by transformer 21.On the output side, unit 14 is coupled to output rectifier 15, its outlet side and then coupling
Close the electrode of electrostatic precipitator 5.
For the pulse operation of this supply of electric power, full electric bridge inverter is operated via control unit 23 and driver 22
Pulse mode.In order to control whole system there is provided having electric current and voltage sensor 16, it is exported for control unit 23.
It is as shown in Fig. 2 a and and further schematic in such as Fig. 2 c the invention is not restricted to the supply of high frequency three-phase power
Show, it is typically operated with the frequency in the resonant tank in 20-200kHz scopes.It could also be possible that as shown in Fig. 2 b
The mains frequency power processing unit gone out, wherein single phase poaer supply 1 are switched in unit 17, are converted by transformer 21, and whole
Flow to use in the final of ESP after output rectifier 15.
It can be the continuous mode 25 or pulse mode 26 of electric current 27 to the charging methods of each ESP supplies of electric power 11, see
Fig. 3.Trickle charge method can be used in collect low-resistivity dust it is most of during.Pulse charge method has used in dust
In or during high resistivity, or for identical dust collection efficiency, in order to save power consumption.During pulse operation, single optimization
Each ESP supplies of electric power.
When one group of ESP supply of electric power 11 is operated in pulse charge pattern and when being fed by same power supplies 1, problem is occurred in that,
As shown in Figure 4.Here, three independent supply of electric power #1, #2 and #3 are powered by public feed by distribution line 2.Each electricity
Power supply drives the independent bus section, busbar section 29,30,31 of electrostatic precipitator 5 respectively.In general, bus section, busbar section can be one single quiet
Any portion of electric cleaner, but they can also be the part of different electrostatic precipitator.Each supply of electric power 11 is wrapped
Include and be responsible for pulse controlled independent control unit 23 via full electric bridge inverter 13 above-mentioned.Independent control unit 23 via
Communication line/control circuit 32 is interconnected.According to the present invention, these circuits 32 are used for the train of pulse for providing single supply of electric power
Control scheduling, to minimize distortion and to optimize the load on power supply.
Current impulse from each ESP supplies of electric power has variable pulse width PW and variable pulse cycle time
Tp, as defined in Fig. 3.Based on manually or automatically Tuning Principle single optimization these parameters in each supply of electric power.By
In each single optimization current impulse parameters of ESP power supply controls unit 23, therefore from the arteries and veins of different ESP supplies of electric power
Rush but uncoordinated according to prior art, and can occur in synchronization, this is illustrated in Figure 5.To put it more simply, in Fig. 5
Pulse period be selected to for all three ESP supplies of electric power #l-#3 all be 9ms, but its be still one reality example.
In this first example, pulse width is 2ms for supply of electric power #1, is 3ms for supply of electric power #2, and is supplied for electric power
It is 4ms to answer #3.
Example in Fig. 5 is shown when all ESP supplies of electric power are while produce pulse（Mutually start in the same time i.e. in the time）
When instantaneous moment.This causes the repeat pattern for the instantaneous power (IPDM) drawn from power supply, as illustrated in figure 5d.Generally,
There is continuous drift between the ESP supply of electric power pulses for causing the discontinuous current drawn from power network.
The second example shown in Fig. 6 shows to produce three ESP supplies of electric power of pulse with different pulse ratios.Pulse ratio is determined
Justice is the relation between pulse width and pulse period.ESP burst mode operation causes a problem in that line current will be shown
DC components in high total harmonic distortion (THD), subharmonic, unbalance phase load or even line current.In the case, it can give birth to
Interruption and failure into the equipment for being connected to same energy system；Generating heat in transformer, generator and power circuit, audible make an uproar
Sound；Electric resonance in power supply；Mechanical oscillation in generator, engine etc..
The solution proposed is that different ESP supplies of electric power or the ESP supplies of electric power of different groups are as shown in Figure 4
Communicated via circuit 32, or as in Fig. 7 control three independent dedusters situation shown in.In this way, pulse
Opportunity be adjusted (scheduling) into causing flow of power as uniform as possible（even）.
Special master computer can be used in distinct methods for communication interface, and it is managed in each local ESP supplies of electric power
Controller unit time slot.
Fig. 8 shows the setting for being provided with this special control computer 33 for controlling to be dispatched in independent deduster 5.
Can be by the way that the change in flow of power be minimized using line distortion optimized algorithm in each local controller.Mesh
Be limitation occur in umber of pulse of the synchronization from different ESP supplies of electric power, see Fig. 9.To put it more simply, the pulse in Fig. 9
It is all 9ms that cycle, which is chosen to for all ESP supplies of electric power, and Fig. 9 a), b) and c) in pulse width scheme respectively with combining
It is identical described in 5a), b) and c), but it is still the example of reality.It can be seen that, for the pulse of single supply of electric power
Width sum is equal to this particular condition of pulse period, and the instantaneous power drawn from power supply becomes in time substantially completely
It is homogeneous（homogeneous）.
In a word, difference with the prior art of the present invention is：
● there is controller in ESP supplies of electric power；
● the part for communication is provided between local controller；Controller unit is exchanged on for pulses generation
Timing and delay information, pulses generation while to avoid/minimize in different bus section, busbar sections.
● there is the adjustment on pulse opportunity so that minimize line distortion.(line distortion optimized algorithm).
This allows to solve at least following problem：
● the possibility of line distortion standard is met in burst mode operation.
● the excessive loss in reduction power network, power cable and supply transformer.
● reduce the risk of the failure due to miscellaneous equipment caused by line distortion.
List of reference signs
| 1 | Power supply, public feed | 23 | Control unit |
| 2 | Low pressure or middle voltage level circuit | 25 | Electric current for continuous operation |
| 3 | Distribution transformer | 26 | For pulse manipulated electric current |
| 4 | It is loaded with the air-flow of particle such as coal dust | 27 | Secondary current |
| 28 | Current limit | ||
| 5 | Electrostatic precipitator | 29 | Bus section, busbar section 1 |
| 6 | Entrance zone, threshold zone | 30 | Bus section, busbar section 2 |
| 7 | Centre portion | 31 | Bus section, busbar section 3 |
| 8 | Exit zone | 32 | Communication line |
| 9 | Chimney | 33 | Control computer |
| 10 | The waste gas of purification | ||
| 11 | Supply of electric power | t | Time |
| 12 | Input rectifier | TP | Postpone in pulse period, pulse |
| 13 | Full electric bridge inverter | ||
| 14 | Resonant tank and transformer | PW | Pulse width |
| 15 | Output rectifier | IPDM | The instantaneous power drawn from power supply |
| 16 | Electric current and/or voltage sensor | ||
| 17 | IGCT block | V | Voltage |
| 18 | DC link. capacitors | #1 | ESP supplies of electric power number 1 |
| 19 | The capacitor of series connection | #2 | ESP supplies of electric power number 2 |
| 20 | The inductor of series connection | #3 | ESP supplies of electric power number 3 |
| 21 | Transformer | ||
| 22 | Driver |
Claims (17)
1. a kind of electrostatic precipitator unit, including：
At least two single supplies of electric power (11), the pulse operation for electrostatic precipitator (5)；
Public feed (1), gives the supply of electric power (11) power supply；And
For the control unit (23) of each supply of electric power in the supply of electric power, at least through between communication line (32) in succession
Connect, occur for the pulse manipulated controlled relative scheduling of the single supply of electric power (11) so as to limit in synchronization
The pulse from described at least two single supplies of electric power number.
2. electrostatic precipitator unit as claimed in claim 1, wherein the supply of electric power (11) it is each supply an electric power to
Few two single electrostatic precipitator (5) power supplies, wherein each electrostatic precipitator of the single electrostatic precipitator is including more
In an independent supply of electric power (11).
3. electrostatic precipitator unit as claimed in claim 1, wherein the supply of electric power (11) is an electrostatic precipitator (5)
A part to be powered to its single bus section, busbar section and/or section.
4. electrostatic precipitator unit as claimed in claim 1, wherein the electrostatic precipitator unit is also described including being connected to
The control computer of the communication line (32) of supply of electric power (11), for scheduling controlling.
5. electrostatic precipitator unit as claimed in claim 1, wherein by being defined as a supply of electric power with reference to supply of electric power
To realize that the pulse manipulated of the single supply of electric power (11) is dispatched relatively, and each other supply of electric power (11)
Pulse of the inceptive impulse relative to the reference supply of electric power is shifted by controlled delay with by the other supply of electric power
(11) gap between pulse of the pulse to fill the reference supply of electric power.
6. electrostatic precipitator unit as claimed in claim 5, wherein the controlled delay is determined to be the other electricity
The pulse of power supply (11) was evenly distributed in the pulse period of the reference supply of electric power, and if all supplies of electric power
Pile-up pulse width be less than the maximum impulse cycle, then controlled delay be configured such that the gap between all pulses is equal,
If the pile-up pulse width of all supplies of electric power be equal to the maximum impulse cycle, controlled delay be arranged for so that
It is very close to each other between pulse, and if all supplies of electric power pile-up pulse width be more than the maximum impulse cycle, then by
Control delay is configured such that the overlapping length of each pulse is equal.
7. electrostatic precipitator unit as claimed in claim 1, wherein the supply of electric power be single-phase or three-phase be based on 50Hz or
60Hz supply of electric power.
8. electrostatic precipitator unit as claimed in claim 1, wherein the supply of electric power is the conversion based on high-tension transformer
Device, the converter based on integrated grid bipolar transistor (IGBT) or to high power and the loaded in series resonance converter of high pressure, its
Described in high power in 10-200kW scopes or the high pressure in 50-150kV DC scopes.
9. electrostatic precipitator unit as claimed in claim 1, wherein the electrostatic precipitator unit is with being supplied to the electrostatic
Deduster (5) have pulse width 0.1-20ms scopes or with the pulse period 0.5ms-2s scopes DC pulses come
Operation, wherein the pulse ratio of pulse width divided by pulse period is 1 to 1/2000.
10. electrostatic precipitator unit as claimed in claim 1, wherein the electrostatic precipitator (5) includes being used for pulse operation
At least one bus section, busbar section and at least one other bus section, busbar section for continuous operation.
11. electrostatic precipitator unit as claimed in claim 1, wherein the electrostatic precipitator unit includes at least n electric power
Supply (11), each supply of electric power（11）Connected by public feed (1) and powered, and at least through communication line (32) indirectly
Connection, wherein n is one of three to six.
12. a kind of commercial Application facility, including：
Electrostatic precipitator unit as claimed in claim 1, for purifying the waste gas from the commercial Application facility.
13. commercial Application facility as claimed in claim 12, wherein the commercial Application facility includes power plant.
14. commercial Application facility as claimed in claim 13, wherein the power plant includes the power plant that fossil fuel is operated.
15. commercial Application facility as claimed in claim 13, wherein the power plant includes the power plant that coal is operated.
16. a kind of method for operating electrostatic precipitator unit, including：
One supply of electric power (11) is defined as referring to supply of electric power, and
The inceptive impulse of each other supply of electric power (11) is moved by controlled delay from the pulse of the reference supply of electric power
Gap between pulse of the position with the pulse by the other supply of electric power (11) to fill the reference supply of electric power, so that
Number in the pulse from the reference supply of electric power and the other supply of electric power of synchronization occurs for limitation,
Wherein described reference supply of electric power is the supply of electric power with the unit of maximal clearance between pulse.
17. method as claimed in claim 16, wherein the controlled delay is configured to the other supply of electric power
(11) pulse was evenly distributed in the pulse period of the reference supply of electric power, and if the accumulation of all supplies of electric power
Pulse width is less than the maximum impulse cycle, then the controlled delay is configured such that the gap between pulse is equal, if institute
Have supply of electric power the pile-up pulse width be equal to the maximum impulse cycle, then the controlled delay be arranged for so that
It is very close to each other between the pulses, and if the pile-up pulse width of all supplies of electric power is more than the maximum impulse cycle, then
The controlled delay is configured such that the overlapping length of each pulse is equal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10166579.2 | 2010-06-18 | ||
| EP10166579A EP2397227A1 (en) | 2010-06-18 | 2010-06-18 | Method to control the line distortion of a system of power supplies of electrostatic precipitators |
| PCT/EP2011/060136 WO2011157831A2 (en) | 2010-06-18 | 2011-06-17 | Method to control the line distortion of a system of power supplies of electrostatic precipitators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102933309A CN102933309A (en) | 2013-02-13 |
| CN102933309B true CN102933309B (en) | 2017-07-18 |
Family
ID=43299350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180030195.9A Expired - Fee Related CN102933309B (en) | 2010-06-18 | 2011-06-17 | The method for controlling the line distortion of the electric power supply system of electrostatic precipitator |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9132434B2 (en) |
| EP (2) | EP2397227A1 (en) |
| CN (1) | CN102933309B (en) |
| BR (1) | BR112012032265A8 (en) |
| DK (1) | DK2582462T3 (en) |
| PL (1) | PL2582462T3 (en) |
| WO (1) | WO2011157831A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10456713B2 (en) * | 2014-10-24 | 2019-10-29 | Nov Process & Flow Technologies As | Power supply system for coalescer |
| PL3112029T3 (en) * | 2015-06-29 | 2021-12-27 | General Electric Technology Gmbh | Pulse firing pattern for a transformer of an electrostatic precipitator and electrostatic precipitator |
| FI127864B (en) * | 2016-12-22 | 2019-04-15 | Valmet Technologies Oy | Electrostatic precipitator and its use |
| JP7311224B2 (en) * | 2018-07-19 | 2023-07-19 | 住友金属鉱山エンジニアリング株式会社 | Electric dust collector and its operation method |
| JP7363009B2 (en) | 2020-03-31 | 2023-10-18 | 住友金属鉱山エンジニアリング株式会社 | Power control system for electrostatic precipitator, electrostatic precipitator, and operating method thereof |
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- 2011-06-17 WO PCT/EP2011/060136 patent/WO2011157831A2/en active Application Filing
- 2011-06-17 CN CN201180030195.9A patent/CN102933309B/en not_active Expired - Fee Related
- 2011-06-17 DK DK11725481.3T patent/DK2582462T3/en active
- 2011-06-17 BR BR112012032265A patent/BR112012032265A8/en not_active IP Right Cessation
- 2011-06-17 US US13/701,143 patent/US9132434B2/en not_active Expired - Fee Related
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| WO2009008449A1 (en) * | 2007-07-09 | 2009-01-15 | Sharp Kabushiki Kaisha | High voltage generator circuit, ion generator and electric apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011157831A3 (en) | 2012-11-22 |
| US9132434B2 (en) | 2015-09-15 |
| BR112012032265A2 (en) | 2016-11-29 |
| CN102933309A (en) | 2013-02-13 |
| PL2582462T3 (en) | 2021-03-08 |
| BR112012032265A8 (en) | 2022-11-08 |
| EP2582462A2 (en) | 2013-04-24 |
| US20130206001A1 (en) | 2013-08-15 |
| EP2397227A1 (en) | 2011-12-21 |
| WO2011157831A2 (en) | 2011-12-22 |
| EP2582462B1 (en) | 2020-09-16 |
| DK2582462T3 (en) | 2020-12-14 |
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